Gas phase atomic metals in the circumstellar envelope of IRC+10216

Free Access

Table 3:

Abundances in the envelope of IRC+10216.
El.	Ion	N	$C_{\rm i}$ ^a	N( I+ II)	N( I+ II)/N(H)	$X_\odot$	$\log_{10} \delta$	$\log_{10} \delta_{7027}$	$\log_{10} \delta_{\zeta~\rm {Oph}}$
		(cm^-2)		(cm^-2)
Na	I	$\phantom{<}$ 4.6(14)	1.22	5.6(14)	4.2(-7)	2.00(-6)	-0.68	-0.06	-0.95
Al	I	<2.8(12)	3.5(3)	<9.8(15)	<7.3(-6)	2.88(-6)	$\ldots$ ^c	$\ldots$	$\ldots$
K	I	$\phantom{<}$ 4.6(12)	1.60	7.4(12)	5.5(-9)	1.29(-7)	-1.37	-0.17	-1.09
Ca	I	$\phantom{<}$ 1.9(12)	4.70	8.9(12)^b	6.6(-9)	2.19(-6)	-2.52	-0.75	-3.73
	II	$\phantom{<}$ 7.0(12)	1.27	$\ldots$	$\ldots$	$\ldots$	$\ldots$	$\ldots$	$\ldots$
Ti	I	<1.9(12)	4.26	<3.9(12)^b	<2.9(-9)	8.32(-8)	<-1.45	$\ldots$	-3.02
	II	<2.0(12)	1.31	$\ldots$	$\ldots$	$\ldots$	$\ldots$	$\ldots$	$\ldots$
Cr	I	$\phantom{<}$ 1.4(12)	10.6	1.5(13)	1.1(-8)	4.47(-7)	-1.60	$\ldots$	-2.28
Mn	I	<3.1(12)	2.21	<6.9(12)	<5.1(-9)	3.16(-7)	< -1.79		-1.45
Fe	I	$\phantom{<}$ 8.8(13)	2.58	2.3(14)	1.7(-7)	2.95(-5)	-2.24	-1.68	-2.27
Sr	II	<2.7(11)	3.82	<1.0(12)	<7.6(-10)	8.13(-10)	$\ldots$ ^c	$\ldots$	$\ldots$

Notes. ^(a) Ionization correction $C_{\rm i} = N({\rm\sc I} + {\sc \rm II}) /N({\sc \rm i})$ for neutral species and $N({\sc\rm I} + {\sc \rm II}) /N({\sc\rm II})$ for singly ionized species. ^(b) Based on observed values of N( I) + N( II), independent of $C_{\rm i}$ . ^(c) Upper limit on $X > X_\odot$ , no useful limit on $\delta$ .

Source LaTeX | All tables | In the text

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.